You can learn core topics such as cells, genetics, evolution, ecology, human biology, and the diversity of living organisms.
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Build a strong Biology foundation with a free online course covering evolution, genetics, ecology, and scientific thinking—study at your pace and boost your grades.
27h28m
36 exercises
Build a strong biology foundation fast with a free online course covering cells, genetics, metabolism and photosynthesis, plus exercises and a certificate option.
1h41m
16 exercises
Build a strong biology foundation fast with a free online course—cells, genetics, DNA and evolution basics plus practice quizzes and a certificate-ready path.
27h52m
20 exercises

Human Body Systems Explained: How Organs Work Together to Keep You Alive
Learn how human body systems work together to maintain homeostasis, with clear explanations of circulation, respiration, digestion, and more.

Understanding Mendelian Inheritance: How Traits Are Passed Down
Discover how Mendelian inheritance explains the transmission of traits from parents to offspring, forming the basis of modern genetics and trait prediction.

The Role of DNA and RNA in Genetic Information Flow
Learn how DNA and RNA manage genetic information flow, enabling protein synthesis and driving advances in medicine, forensics, and biotechnology.

Genetic Mutations: How Changes in DNA Shape Life
Explore genetic mutations—their types, causes, and effects—and learn how changes in DNA influence evolution, diversity, and genetic disorders.

An Introduction to Genetics: The Blueprint of Life
Discover the basics of genetics, from DNA and chromosomes to heredity and genetic variation, and explore its applications in medicine, agriculture, and forensics.

The Structure and Function of Organelles: An In-Depth Look at the Cell’s Machinery
Organelles are the cell’s machinery—each with a key role that enables life. Their structure and function reveal how cells work, grow, and stay alive.

Introduction to Cell Biology: Understanding the Building Blocks of Life
Cell biology reveals how cells function, grow, and interact—laying the foundation for advances in health, genetics, and biotechnology.

Cell Division: The Cycle of Life in Cell Biology
Cell division is key to growth, repair, and reproduction, ensuring genetic continuity and supporting health through regulated cellular processes.
Explore free online courses designed to develop knowledge of living organisms, cellular structures, heredity, evolution, physiology, ecology, and biological diversity. These learning opportunities combine educational terminology with accessible explanations, helping students build a strong scientific foundation. Every course is free, includes exercises for knowledge reinforcement, and offers free certification after completion.
The course collection covers introductory and foundational principles as well as specialized subjects such as cell biology and genetics. Learners can study the scientific method, levels of biological organization, biomolecules, metabolism, cell division, DNA, gene expression, inheritance, natural selection, taxonomy, homeostasis, and interactions between organisms and ecosystems.
Study at your own pace and revisit lessons whenever additional review is needed. Course exercises help assess comprehension, recall important terminology, and apply concepts to questions involving cellular function, genetic transmission, classification, adaptation, and ecological relationships. This format is useful for school revision, examination preparation, professional development, or independent scientific learning.
There are no course fees, and learners can obtain free certification upon completing the required learning activities. The courses are suitable for beginners, students, educators, and anyone interested in health sciences, biotechnology, environmental science, medicine, agriculture, or related academic disciplines.
To access these free courses, lessons, exercises, and free certification, users must install the Cursa app. Android users can install it through Google Play at Download for Android. iPhone users can install it through the App Store at Download for iOS / iPhone. Begin learning online and strengthen your understanding of the processes that define living systems.
What can I learn in an online biology course?
You can learn core topics such as cells, genetics, evolution, ecology, human biology, and the diversity of living organisms.
Is biology suitable for beginners?
Yes. Introductory biology courses explain essential concepts and vocabulary without requiring prior biology knowledge.
What is covered in a cell biology course?
Cell biology covers cell structure, organelles, cell membranes, metabolism, cell division, and cellular communication.
What will I learn in genetics basics?
You will learn about DNA, genes, chromosomes, inheritance, mutations, gene expression, and basic genetic patterns.
Does a biology course include microbiology?
Many biology courses introduce microbiology, including bacteria, archaea, viruses, and their roles in health and ecosystems.
Can I study plant biology online?
Yes. Plant biology courses can cover photosynthesis, transport systems, plant cells, growth, reproduction, and adaptation.
Can online biology courses help with exam preparation?
Yes. Biology exam-prep courses review key concepts, terminology, and commonly tested areas such as cells, genetics, and ecology.
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Curtis Ratcliff jr
can you get a job out of the certificate out of the world
CourseIntroductory Biology
fatima jahan
Amazing teaching style learned so much , would recommend it to other students your notes were great.
CourseBiology foundations
Fatima Hussain
fantastic test were fair without being easy
CourseBiology foundations